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Texas Instruments SN74LVT162245ADGGR
- Part No.:
- SN74LVT162245ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVT162245ADGGR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,626
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Product details
Overview
SN74LVT162245ADGGR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V logic domains. It supports mixed-mode operation (5-V inputs/outputs with 3.3-V VCC), delivers ±12 mA A-port drive and ±64 mA B-port sink current, and features integrated 22-Ω series output resistors to suppress overshoot in high-speed PCB interconnects - deployed in industrial backplane interfaces and FPGA-to-ASIC bridging.
For engineers reviewing the SN74LVT162245ADGGR datasheet, SN74LVT162245ADGGR pinout, SN74LVT162245ADGGR application, or SN74LVT162245ADGGR equivalent, key selection criteria include its hot-insertion support via Ioff and power-up 3-state, flow-through pinout for optimized trace routing, distributed VCC/GND architecture to minimize switching noise, and guaranteed operation down to 2.7 V for battery-backed systems.
Technical Context
The SN74LVT162245ADGGR implements two independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output enable) signals. Its ABT (Advanced BiCMOS Technology) core enables TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) while operating from a 2.7–3.6 V supply, allowing direct interfacing with legacy 5-V buses without level shifters.
Each port features always-active input circuitry and true 3-state outputs with fast propagation delays (tPLH/tPHL ≤ 3.7 ns at VCC = 3.3 V), low ground bounce (VOLP < 0.8 V), and latch-up immunity exceeding 100 mA per JESD 78 Class II - critical for robust operation in noisy industrial control and telecom line-card environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery rails and brownout-tolerant system design |
| Input Voltage Range | –0.5 V to 5.5 V - enables safe 5-V signal injection into 3.3-V domain without external clamping |
| A-Port Output Drive | ±12 mA - sufficient to drive 50-Ω transmission lines or multiple CMOS loads without external buffers |
| B-Port Sink Current | 64 mA - handles heavy capacitive loads and fanout to multiple TTL inputs in legacy subsystems |
| Propagation Delay | ≤3.7 ns (A→B, VCC = 3.3 V) - ensures sub-4-ns timing margin for 100-MHz bus cycles |
| Hot-Insertion Support | Ioff ≤ ±100 µA at VCC = 0 V - prevents backdrive damage during live board insertion |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC standards for handling in automated assembly |
Pinout & Package
TSSOP-48 package (DGG), 12.4 mm × 6.0 mm × 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = L → B→A; DIR = H → A→B |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-low: OE = L enables outputs; OE = H forces high-impedance state |
| 1A1–1A8, 2A1–2A8 | A-port data I/Os (dual-octal) | 3.3-V logic interface side; include 22-Ω series termination for clean edge integrity |
| 1B1–1B8, 2B1–2B8 | B-port data I/Os (dual-octal) | 5-V tolerant side; capable of sinking 64 mA per pin for legacy bus loading |
| VCC | Power supply | Distributed across 4 pins (pins 7, 18, 29, 40) to reduce simultaneous switching noise |
| GND | Ground reference | Distributed across 6 pins (pins 4, 11, 22, 33, 44, 47) for low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 5-V input/output tolerance with 3.3-V VCC eliminates need for discrete level translators in hybrid-voltage systems |
| Integrated 22-Ω series resistors | On all A-port outputs - reduces PCB component count and layout complexity for EMI-sensitive applications |
| Flow-through pinout architecture | Input and output pins aligned on opposite sides - enables straight PCB trace routing and minimizes crosstalk |
| Power-up/down 3-state | Outputs remain high-Z when VCC is below 1.5 V - prevents bus contention during power sequencing |
| Distributed VCC/GND pins | 10 total power/ground pins placed symmetrically - lowers PDN impedance and suppresses ground bounce under fast switching |
Applications
| Industrial Backplane Interface | FPGA-to-ASIC Bridging |
|---|---|
Use Scenario: Bidirectional data exchange between 3.3-V FPGA I/O banks and 5-V legacy ASIC peripherals on a shared backplane. IC Role / Device Role / Timing Role: Bus transceiver providing voltage-level translation and direction-controlled data routing between heterogeneous logic families. Use Value: Enables seamless integration without external level shifters or series resistors, reducing BOM cost and board area by >12 mm² per channel. |
Use Scenario: Isolating and translating control/data signals between a Xilinx Artix-7 FPGA (3.3-V I/O) and a TI C6000 DSP (5-V tolerant I/O). IC Role / Device Role / Timing Role: Dual-octal transceiver managing synchronous parallel bus handshaking with sub-4-ns propagation delay. Use Value: Guarantees setup/hold timing margins for 100-MHz parallel interfaces while supporting hot-swap reconfiguration of FPGA firmware. |
| Telecom Line Card Buffering | Automated Test Equipment (ATE) Signal Conditioning |
Use Scenario: Driving high-capacitance traces (>30 pF/inch) from a 3.3-V microcontroller to 5-V relay drivers and optocouplers on a telecom line card. IC Role / Device Role / Timing Role: High-current buffer and voltage translator ensuring signal integrity across long PCB runs. Use Value: Delivers 64 mA sink capability per B-port pin to overcome trace capacitance and maintain rise/fall times < 2 ns. |
Use Scenario: Interfacing a 3.3-V pattern generator to 5-V DUTs in boundary-scan test fixtures requiring precise timing and isolation. IC Role / Device Role / Timing Role: Direction-controllable bus isolator enabling bi-directional stimulus/response capture without signal contention. Use Value: Ioff protection and power-up 3-state prevent false triggering during fixture initialization and power cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive strength (±24 mA), no integrated series resistors, 1.65–3.6 V VCC range | Suitable for lower-speed (<50 MHz), low-power portable systems; lacks 5-V tolerance on B-port | Select when interfacing only with 3.3-V or 2.5-V systems and minimizing ICCQ is critical |
| SN74ALVC164245DGGR | Higher speed (tPD ≤ 2.8 ns), 1.65–3.6 V VCC, 5-V tolerant inputs only (not outputs) | Optimized for ultra-fast 3.3-V ↔ 2.5-V translation; not suitable for driving 5-V loads directly | Choose for high-frequency memory or processor bus buffering where output 5-V drive is unnecessary |
Compared with SN74LVC16245ADGGR and SN74ALVC164245DGGR, the SN74LVT162245ADGGR uniquely combines 5-V output drive capability, integrated 22-Ω termination, and full hot-insertion support - making it the only option among the three qualified for legacy 5-V bus loading and live-insertion in industrial backplanes.
Availability
SN74LVT162245ADGGR is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA-to-ASIC bridging, telecom line card buffering, and automated test equipment signal conditioning requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for SN74LVT162245ADGGR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability interface and power management ICs.
The SN74LVT162245ADGGR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, high-speed bidirectional communication between mixed-voltage digital subsystems in industrial, telecom, and computing infrastructure.
FAQ
What is the maximum operating temperature range for the SN74LVT162245ADGGR?
The SN74LVT162245ADGGR is rated for operation from –40°C to +85°C ambient temperature. This industrial-grade temperature range is validated per TI's recommended operating conditions and supports deployment in harsh environments such as factory automation controllers and outdoor telecom cabinets. The device maintains full electrical specifications-including propagation delay, drive strength, and 3-state leakage-across this entire range.
Does the SN74LVT162245ADGGR support hot insertion, and how is it implemented?
Yes, the SN74LVT162245ADGGR supports hot insertion via two complementary mechanisms: Ioff circuitry that limits current to ±100 µA when VCC = 0 V, and power-up 3-state logic that holds outputs in high-impedance until VCC exceeds 1.5 V. These features prevent damaging backdrive currents and bus contention during live board replacement - a requirement verified in TI's application report SCBA004 and confirmed in the device's absolute maximum ratings table.
Can the SN74LVT162245ADGGR interface directly with 5-V logic without external components?
Yes, the SN74LVT162245ADGGR accepts 5-V inputs and drives 5-V loads directly while powered from a 3.3-V supply. Its B-port outputs are rated for 5-V operation (VO up to 5.5 V), and both A- and B-port inputs tolerate 5-V signals. No external level shifters, pull-ups, or series resistors are required - a capability explicitly documented in TI's "Mixed-Mode Signal Operation" feature and validated in the VI and VO absolute maximum ratings.
What is the purpose of the 22-Ω series resistors on the A-port outputs of the SN74LVT162245ADGGR?
The 22-Ω series resistors integrated on all A-port outputs of the SN74LVT162245ADGGR serve to dampen signal reflections and suppress overshoot/undershoot on PCB traces, particularly in high-speed or high-capacitance routing scenarios. This eliminates the need for discrete termination resistors, reduces layout complexity, and improves signal integrity - a design feature highlighted in TI's datasheet under "A-Port Outputs Have Equivalent 22-Ω Series Resistors."
How does the flow-through architecture of the SN74LVT162245ADGGR benefit PCB layout?
The flow-through architecture of the SN74LVT162245ADGGR aligns A-port inputs on one side and B-port outputs on the opposite side (e.g., A1–A8 on left, B1–B8 on right), enabling straight, non-overlapping PCB traces with minimal vias. This reduces crosstalk, simplifies layer stackup, and improves timing predictability - a layout advantage emphasized in TI's "Flow-Through Architecture Optimizes PCB Layout" feature and validated in the top-view pin diagram for the DGG package.
SN74LVT162245ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA; 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVT162245ADGGR FAQ
1.How can I place an order for SN74LVT162245ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT162245ADGGR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74LVT162245ADGGR reliable?
The price and inventory of SN74LVT162245ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT162245ADGGR is usually 5 days.
3.What payment methods are accepted for SN74LVT162245ADGGR?
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4.How is shipping managed for SN74LVT162245ADGGR?
SN74LVT162245ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT162245ADGGR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74LVT162245ADGGR?
For technical support, including SN74LVT162245ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT162245ADGGR requirements.
6.How does Aetrix verify that SN74LVT162245ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVT162245ADGGR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LVT162245ADGGR meets industry standards.
7.What is the process for return or replacement of SN74LVT162245ADGGR?
All SN74LVT162245ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT162245ADGGR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74LVT162245ADGGR part is unused and in its original packaging.
Return procedure for SN74LVT162245ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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